Nkhani

Kukhalapo kwa nthaka wosanjikiza kwabweretsa zovuta pakuwotcherera zitsulo.Mavuto akuluakulu ndi awa: kuwonjezereka kwa mphamvu zowotcherera ming'alu ndi pores, kutuluka kwa nthaka ndi utsi, kuphatikizika kwa oxide slag, kusungunuka ndi kuwonongeka kwa zokutira zinki.Pakati pawo, kuwotcherera ming'alu, dzenje la mpweya ndi kuphatikizika kwa slag ndizovuta zazikulu,
Weldability
(1) Mng’alu
Panthawi yowotcherera, zinki wosungunuka amayandama pamwamba pa dziwe losungunuka kapena pamizu ya weld.Chifukwa chakuti nthaka yosungunuka ya zinki ndi yotsika kwambiri kuposa yachitsulo, chitsulo chomwe chili mu dziwe losungunula chimanyezimira poyamba, ndipo zinki ya wavy idzalowetsamo m'malire a njere yachitsulo, zomwe zimayambitsa kufooka kwa mgwirizano wa intergranular.Komanso, n'zosavuta kupanga intermetallic Chimaona mankhwala Fe3Zn10 ndi FeZn10 pakati nthaka ndi chitsulo, amenenso amachepetsa plasticity wa chitsulo chowotcherera, kotero n'zosavuta kusweka m'malire a tirigu ndi kupanga ming'alu pansi pa zotsatira za kuwotcherera otsalira kupsyinjika.
Zomwe zimakhudza kukhudzidwa kwa crack: ① Makulidwe a zinki wosanjikiza: Zinc wosanjikiza wa chitsulo chagalasi ndi woonda komanso mphamvu ya ming'alu ndi yaying'ono, pomwe zinc wosanjikiza wa zitsulo zovimbika zotentha ndi zokhuthala ndipo mphamvu yakung'apa ndi yayikulu.② makulidwe a kagwiridwe ka ntchito: kuchulukira kwa makulidwe, kumapangitsanso kupsinjika kwakukulu koletsa kuwotcherera komanso kukhudzika kwamphamvu kwa mng'alu.③ Kusiyana kwa Groove: gap
Zokulirapo, zokhuza kung'amba.④ Njira yowotcherera: mphamvu zowotcherera zimakhala zazing'ono zikagwiritsidwa ntchito, koma zimakulirakulira pamene kuwotcherera kwa mpweya wa CO2 kukugwiritsidwa ntchito.
Njira zopewera ming'alu: ① Musanawotchere, tsegulani poyambira ngati V, woboola pakati pa Y kapena X pamalo owotcherera pa pepala lamalata, chotsani zokutira za zinki pafupi ndi poyambira ndi oxyacetylene kapena kuphulika kwa mchenga, ndikuwongolera kusiyana kuti zisachitike. kukhala wamkulu kwambiri, nthawi zambiri pafupifupi 1.5mm.② Sankhani zida zowotcherera zomwe zili ndi Si zochepa.Waya wowotcherera wokhala ndi Si wocheperako adzagwiritsidwa ntchito powotcherera wotetezedwa ndi mpweya, ndipo mtundu wa titaniyamu ndi ndodo yamtundu wa titaniyamu-calcium idzagwiritsidwa ntchito pakuwotcherera pamanja.
(2) Stomata
Zinc wosanjikiza pafupi ndi poyambira adzakhala oxidize (fomu ZnO) ndi nthunzi pansi pa zochita za arc kutentha, ndi zimatulutsa utsi woyera ndi nthunzi, kotero n'zosavuta chifukwa pores mu weld.Pamene kuwotcherera kumakulirakulira, m'pamenenso mpweya wa zinc umakhala wovuta kwambiri komanso mphamvu ya porosity imakulirakulira.Sikophweka kupanga pores mu sing'anga panopa osiyanasiyana ntchito titaniyamu mtundu ndi titaniyamu-kashiamu n'kupanga zowala zowotcherera.Komabe, ma elekitirodi amtundu wa cellulose ndi ma elekitirodi amtundu wa haidrojeni otsika akagwiritsidwa ntchito powotcherera, ma pores amakhala osavuta kuchitika pansi pamagetsi otsika komanso okwera kwambiri.Kuphatikiza apo, ngodya ya elekitirodi iyenera kuyendetsedwa mkati mwa 30 ° ~ 70 ° momwe ndingathere.
(3) Zinc evaporation ndi utsi
Pamene kanasonkhezereka zitsulo mbale ndi welded ndi magetsi arc kuwotcherera, nthaka wosanjikiza pafupi dziwe wosungunuka ndi oxidized kuti ZnO ndi chamunthuyo pansi pa zochita za arc kutentha, kupanga utsi wambirimbiri.Chigawo chachikulu cha utsi wamtunduwu ndi ZnO, womwe umakhala ndi mphamvu yolimbikitsa kwambiri pa ziwalo zopuma za ogwira ntchito.Choncho, njira zabwino zolowera mpweya ziyenera kuchitidwa panthawi yowotcherera.Pansi pa ndondomeko yowotcherera yomweyi, kuchuluka kwa utsi wopangidwa ndi kuwotcherera ndi titaniyamu oxide mtundu electrode ndi wochepa, pamene kuchuluka kwa utsi opangidwa ndi kuwotcherera ndi otsika hydrogen mtundu elekitirodi ndi waukulu.(4) Kuphatikizidwa kwa okosijeni
Pamene kuwotcherera panopa ali wamng'ono, ZnO yopangidwa mu Kutentha ndondomeko si kophweka kuthawa, zomwe n'zosavuta chifukwa ZnO slag kuphatikizidwa.ZnO ndiyokhazikika ndipo malo ake osungunuka ndi 1800 ℃.Zophatikizira zazikulu za ZnO zimakhala ndi zotsatira zoyipa kwambiri pamapulasitiki owotcherera.Titaniyamu oxide electrode ikagwiritsidwa ntchito, ZnO ndi yabwino komanso yogawidwa mofanana, yomwe ilibe mphamvu pang'ono pa pulasitiki ndi mphamvu zolimba.Mtundu wa cellulose kapena ma elekitirodi amtundu wa haidrojeni akagwiritsidwa ntchito, ZnO mu weld ndi yayikulu komanso yochulukirapo, ndipo magwiridwe antchito amawotcherera ndi otsika.